Why not splatter?

I've been thinking about small acts that can infect people with more goodwill. I remembered an ironic joke. You know how someone cuts you off in traffic and you lean on the horn, or even give them the finger? Have you ever thought that the person you insulted might do the same thing to another person, in traffic or elsewhere, and that wave of bad vibes you initiated propagates through the world? The punch line to the joke is "...and eventually it all ends up in the Middle East."